1.   But if present trends continue, and films pile on the endorsement and product plugs, moviegoers might vote with their feet.

2.   But since the sequence involves elephant killing and the North Vietnamese, this may not be the ideal product plug.

3.   Fortunately, the ideas outnumber the product plugs.

4.   Product plugs, usually so annoying in movies, are absolutely perfect here.

5.   The latest development is slipping product plugs into textbooks.

6.   There are also some heavy- handed product plugs.

7.   Until recently, product plugs were the result of an informal barter system between advertisers and movie producers.

8.   Some product plugs are almost unnoticeable.